Improvement in combined elevators and conveyers



intimi gisten THOMAS J. POWELL, OF NAPLES, NEW YORK.

Letters Patent' No. 108,183, datedOctober 11, 1870.

IMPROVEMENTJN COMBINED ELEVATORS AND CONVEYERS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom 'it may concern Be it known that I, THOMAS J POWELL, ofNaples, in the county of Ontario and State of New York, have invented acertain new and useful Improvement in Combined Elevators and Conveyors,of which the following is a specification.

Nature of the Intention.

v 1n general construct-ion, this device is similar to that patented tome May 24, 1870.

The invention consists in the arrangement of t-he sliding pawl, ascombined with the other operating parts.

General Description.

Figure 1 is a side elevation.

Figure 2, a section, showingl the operating parts.

Figure 3, a plan ofthe operating parts.

A is the car, running on the wooden way B.

lt has carrying-rollers o a at the top, and sockets b b at the bottom.

In the latter rests a block, (l, which holds the operating parts.

The ends of this block have journals or bearings e c, which allow a freeturning action in the sockets, and the sockets are made open at the top,so that the position of the block therein may be changed at pleasure, toadapt the device to run in either direction.

In one end of the block is situated a pulley, E, over which passes thehoisting-rope or chain G, which then extends outward tothe propel'position for attaching the power.

In the opposite end ofthe block is situated a hooklever, D, pivoted inthe journal or bearing c, or other part of the block.

At the outer end, it is provided with a reverse hook, lt, and arm I,which act in conjunction with the stop or eye K, the arm striking thestop in advance, and the hook catching it inthe rear, to retain the carin position while the load is being drawn up.

Thus far, the construction the same as in niy patent before alluded to.

Intermediate with the pulley and the lever, above described, is situateda pawl, H, whose arrangement constitutes the essential feature of niypresent invention.

lt has lateral bearings or studs d. d ff, which rest in correspondingslots or ways f/ r/ 71 h in the sides of the carryingbloele The slotsgare ofi-the forni shown, being of such extent as to allow the necessaryforward and backward, as well as up and down, motions of the pawl,

and the slide g' heilig inclined, so that, as the stud strikes it, itdraws and directs the pawl properly forward to engage with the chain.

.The rear slots h arc simply made of suliicient extent to allow theforward and back motion.

The forward end ofthe pawl has an edge, p, which engages with the chain,and retains it against -the pulley, to hold the load up.

lt also has a projection, r, against which the stopdisk M on the chainstrikes to elevate the pawl.

'lhe rear end is formed, as shown at in, to strike under the end of thelever I), and hold the hook in engagement with the eye K, the saidforward end ot the lever being concentric, either in whole or in part,with its pivot, in order to preserve t-ue same posit-ion with the pawlunder all circumstances.

The action will be readily understood. As the load rises, the pawl iselevated by the stop-disk M, or other suitable means, thereby drawing itforward, by reason of its studs d d striking upon the ineliucs g' g' ofthe slots.

This action draws the rear end of ,the pawl from under the front end ofthe lever D, thereby allowing the same to fall behind the pawl, andreleasing the hook 7l, so that the ear can move forward.

The same action that locks the pawl in its forward position causes itsedge p to engage with the chain, so that any back action ofthe chainwill be taken up and held by the pawl.

In my patent before alluded to, and also in other patents, there arepawls, or'equivalent devices, intended for the same purpose as the abovedescribed, but differently arranged, and operating in a differentmanner.

I claim a novelty in a pawl which simply slides forward and back, thefrontend elevating at the same time, in contradiction to a pivoted orturning one, and, in connection with the hook-lever D, it is of specialadvantage, as it can never fall, to fasten said leverin place, till thehook has absolutely engaged, for the reason that it cannot 'go under theend of the lever till that action has taken place. In the old form therewas a liability to a diliicult-y in this respect. Also, in releasing thechain, to allow it to fall, the pawl slides back wit-hout reaction,whereas, in other forms of the pawl, the strain has to be first lift-edbefore the pawl can be freed.

It is manifest that this in'l'novcmcnt'can be applied to other forms ofthe car, or the carrying-block, as well as that covered by my patentalluded to.

The hoisting-chain,` instead of having the load attached directly to itscud, as shown, may be att-ached' to the block or frame, and the loadconnected with it by a pulley-block resting on ton the chain, and, ifdele l sired, a swivel may be connected eitherto the block or frame, orinterposed in the chain, to prevent twisting. Also, the hoisting-pulleyE may be oogged, if desired, to engage with the end of the pziwl; andfurthermore, the hook h may be made to stztnd up, instead of down, inwhich case the reati' end of' the p21-w1 will strike over instead of'under it. Also, a. spring may be employed, to assist in throwing thepawl back from its forward position.lv The principle, however, willremain the same in any oase. If desired, also, the projection on theunder side of the pnwl mary be made crotohed to be more ont of the wayof Jthe rope.

lThat I claim and desire to secure by Letters Patent is- The pziwl H,resting loosely in its seat, and having.,rv

